The following imprisonment rates are age standardised. When comparing rates of imprisonment for Aboriginal and Torres Strait Islander and non-Indigenous prisoners, it is preferable to use age standardised rates (for further information see Explanatory Notes, paragraphs 34-35).

The rate of imprisonment for Aboriginal and Torres Strait Islander prisoners was 14 times higher than the rate for non-Indigenous prisoners at 30 June 2010, no change from the rate in 2009. The highest ratio of Aboriginal and Torres Strait Islander to non-Indigenous imprisonment rates in Australia was in Western Australia (19 times higher for Aboriginal and Torres Strait Islander prisoners). Tasmania had the lowest ratio (three times higher for Aboriginal and Torres Strait Islander prisoners). (Table 4.2)

Ratio of Indigenous to non-Indigenous age standardised imprisonment rates, by state and territory

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